Which statement explains how people working in their own self-interest produce goods, services, and wealth for others? Which statement explains how people working in their own self-interest produce goods, services, and wealth for others?

A. By taking advantage of a vast supply of labor, people working in their own self-interest could hire others at very low wages.
B. In order to earn money and produce goods that improve lives, self-directed gain ultimately provides jobs, and subsequently wages for others.
C. The government pays entrepreneurs in the United States to produce goods, services, and wealth for others.
D. A portion of the entrepreneur's profit (as required by law) goes to the charity of one's choice to support the less fortunate.